Home / 13,607.40-20,385.90-7,746.60

Finding the Fourth Proportional to 13,607.40, 20,385.90 and 7,746.60

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Solution

The fourth proportional to 13,607.40, 20,385.90 and 7,746.60 is: 11,605.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.40 : 20,385.90 = 7,746.60 : x
  2. Step 2: Convert to fraction form
    13,607.40/20,385.90 = 7,746.60/x
  3. Step 3: Cross multiply
    13,607.40x = 20,385.90 × 7,746.60
  4. Step 4: Simplify right side
    13,607.40x = 157,921,412.94
  5. Step 5: Solve for x
    x = 157,921,412.94/13,607.40
  6. Step 6: Final answer
    x = 11,605.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.